Feed-roll.



THOMAS A. COLEMAN, OF

FULLERTON, LOUISIANA, ASSIGNOR TO PETER VREDENBURGH,

JR., OF VREDENBURGH, ALABAMA.

FEED-ROLL.

Specification of Letters Patent.

Patented Apr. 4, 1916.

' Application filed May 11, 1914. Serial No. 837,755.

ment in feed rolls for lumber-working ma-V chines, vsuch as edgers.

As 1s generally understood, in the manu` Y facture of lumber, the boards as sawed from the logs are in varying widths. In order to secure boards of uniform width, and having squared edges, the rough lumber is run through edgers, wherein a gang of saws cut them into the selected widths, and square the edges. In order to do this properly, it is necessary to have an absolutely'positive and secure feed to present and hold the board properly to the operation of the saws. The customary feeding mechanism comprises one or more feed rolls which have irregular surfaces so as to engage the board and feed it forward, and suitable press rolls which hold the board securely in engagement with the feed rolls. Inasmuch as the machines must be quite wide, in order to accommodate boards of maximum widths usually cut from the logs, it follows that the feed rolls must be of considerable length. The feed rolls necessarily are subject to hard usage which frequently causes breakage of the teeth, luting or other surface formation by virtue of which the feed roll has working engagement with the boards. When a feed roll becomes thus mutilated, it

renders the machine inaccurate, and mustl said elements is broken or mutilated, it may be withdrawn and replaced without necessitating replacement of the entire feed roll or difficult and expensive repairs.

A further object of my invention is to provide a construction wherein the engaging elements of a feed roll may be selectively arranged so as to vary the extent of the working surface of the roll, or to provide intervals alongy the length of the roll which are devoid of engaging elements.

l/Vith fthese and other objects in view, which will hereinafter be made apparent, `it will be understood by reference to the accompanying drawings, that- FigureV l illustrates a longitudinal sectional view yof a portion of a feed roll containing my improvements. Fig. 2 illustrates a cross section of the same, taken substantially on line 2 2 of Fig. l. Fig. 3 illustrates a modified form of clamping ring. Fig. l illustrates a modified form of barrel. Fig. 5 is a side View partly broken away of a modified form. Fig. 6 is an illustration of the same with the engaging elements in place. Fig. 7 is an en d view of one of the barrels illustrated in Figs. 5 and 6.

Referring to the drawings more specifically, the numeral l designates a shaft which is continuous throughout the length of the feed roll, being suitably supported in journals and provided with driving mechanism whereby it may be rotated. Shaft l is provided with one or more continuous longitudinal splines 2 formed on the shaft. Slidable longitudinally on the shaft, and held against rotationV relative thereto by the splines 2, is a clamping collar 4.-, and a clamping nut 5, or other suitable means is provided for moving the collar 4 inwardly on theshaft and preventing its movement backward. y l

' Mounted on the shaft, and held against rotation thereon by the splines 2, is a series of drums or barrels 6 which support between them clamping rings 7. These rings are triangular in cross section, having the inwardly sloping faces 7a. The ends of the barrels 6 are beveled off to form the shoulders 6? which engage under the sloping faces of the rings and a similar sloping face la of the clamping collar 4. As will best be understood by reference'to Fig. 2, the barrels 6 l are provided with longitudinal slots 8 extending from end to end of the barrels, and

adapted to receive the engaging elements 9.

The engaging elements 9 are suitable strips of hard metal which are formed with the saw teeth l0, or otherwise suitably knurled or formed, so as to secure a working engagement withV the material to be handled by the roll. The ends of the engaging elements 9 are mitered oli so as to conform to the beveled portion tlfL of the barrels, and so that they will engage under the inwardly sloping faces of the clamping rings and the clamping collar.

The barrels 6 are slidable longitudinally on the shaft l, and are adapted to be clamped in position against the Clamping rings 7 by means of the clamping collar 4 and a similar clamping collar at the other end of the shaft, which are moved inwardly to effect the clamping operation by screwing up the clamping nuts Gr if desired, one of the end collars may be shrunk on the shaft and the clamping operation effected by inward movement of the other collar.

As will be plainly understood, the engaging elements 9 are placed in the slots in the barrels G and the barrels and clamping rings 7 clampee together by the collars 4, whereby the engaging elements 9 are securely held in position by virtue of their engagement under the sloping faces of the rings and collars.

in case of injury to any of the clamping elements 9, the roll can be repaired quickly by simply loosening the nut 5, sliding back the collar 4, and sliding back the barrels 6 until the ends of the injured engaging elements are disengaged from under the rings 7. rthereupon the injured member can be removed and replaced, and the roll quickly reassembled by moving the portions together and clamping them in position, as above describee. rlhis construction, therefore, renders it unnecessary to remove any of the barrels or collars from the shaft. or the shafty from its bearings. In case it is desired to have a portion of the roll bare of the engaging elements, they can be removed from such of the barrels as desired, leaving intervals wherein the roll does not carry engaging elements.

In Figs. 3 and 4, l have illustrated a modified form of clamping ring and barrel. Instead of being triangular in cross section throughout its circumference, the ring illustrated in Fig. 3 is quadrilateral in cross section and has seats l0 milled in both sides, which seats are adapted to receive the projecting ends of the engaging elements 9. For this type of ring, the ends of the barrel instead of being beveled, are shouldered so as to provide the shoulder' ll'which lits within the ring and against its inner periphery.

It will be observed that the clamping rings are not restricted by the shaft against movement transversely thereof, and hence they will be self-centering between the juxtaposed carriers, and consequently will equalize the pressure on all of the engaging ele-` ments about the periphery of the carriers. This insures all the engaging elements being securely clamped in place.

The barrels 6 may be of any desired length, and therefore, any desired number to a. roll, and, of course, the length of the engaging elements 9 is governed by the length of the barrel.

From the foregoing, it will be apparent that my improved feed roll is made up of a plurality of individually mounted carriers and interposed clamping members which cooperate to 'support and clamp the engaging elements in position, said several members being individually movable so as to permitV the removal and insertion of individual engaging elements.

l am aware that this device is adapted to a variety of applications, and that various changes and modifications therein may be made whereby to adapt it to different spe-` cific uses. riherefore, it is not my intention that my invention be limited to the specific forms illustrated and described.

lhat i claim is: Y

l. A sectional feed roll comprising va. shaft, a plurality of carriers mounted thereon, engaging elements removably mounted in the carriers, clamping members having an inwardly decreasing cross section disposed between the carriers for engagement with the ends of the engaging elements, said clamping members being so constructed that they are centered by engagement with the engaging elements, and means for securing the engaging elements and clamping members in contact.

2. A sectional feed, roll comprising a shaft, a pair of relatively movable carriers supported on the shaft, engaging elements rem vably mounted in the carriers and eX- tending longitudinally of the shaft, a clamping member having its opposite sides beveled and converging toward the shaft, said clamping member being angularly movable relative to the shaft so as tov have equalizing engagementwith the engaging elements, and

means for securing the engaging elements` and clamping member in Contact.

in testimony whereof l? hereunto aiiix .myV

vsignature in the presence of two witnesses,

this 5th day of May, 1914.

. Y THOMAS A. COLEMAN. lVitnesses: Y n

C.V A.Y Yannono, H. D. DEAR.

Copies of this patent may be obtained for rive cents each, by addressing the Commissioner o! Patents,

v Washington, D. G. 

